8130431178 has 24 divisors (see below), whose sum is σ = 17622006948. Its totient is φ = 2709209472.

The previous prime is 8130431117. The next prime is 8130431191. The reversal of 8130431178 is 8711340318.

It can be written as a sum of positive squares in 2 ways, for example, as 8045551809 + 84879369 = 89697^2 + 9213^2 .

It is a super-2 number, since 2×8130431178² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23151 + ... + 129602.

Almost surely, 2^8130431178 is an apocalyptic number.

8130431178 is an abundant number, since it is smaller than the sum of its proper divisors (9491575770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8130431178 is a wasteful number, since it uses less digits than its factorization.

8130431178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155718 (or 155715 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8130431178 is about 90168.9036087275. The cubic root of 8130431178 is about 2010.8107236712.

The spelling of 8130431178 in words is "eight billion, one hundred thirty million, four hundred thirty-one thousand, one hundred seventy-eight".